docs: def isInside(self, pts, In='(X,Y,Z)'):
          """ Return an array of booleans indicating whether each point lies
          inside the Struct volume
  
          Tests for each point whether it lies inside the Struct object.
          The points coordinates can be provided in 2D or 3D
          You must specify which coordinate system is used with 'In' kwdarg.
          An array of boolean flags is returned.
  
          Parameters
          ----------
          pts :   np.ndarray
              (2,N) or (3,N) array, coordinates of the points to be tested
          In :    str
              Flag indicating the coordinate system in which pts are provided
              e.g.: '(X,Y,Z)' or '(R,Z)'
  
          Returns
          -------
          ind :   np.ndarray
              (N,) array of booleans, True if a point is inside the volume
  
          """
          ind = _GG._Ves_isInside(pts, self.Poly, Lim=self.Lim,
                                  nLim=self._dgeom['noccur'],
                                  VType=self.Id.Type,
                                  In=In, Test=True)
          return ind